Berthold huber



(No Model.) i 2 sheets-sheet 1.

Y' B.H UBER. CYLINDER PRINTING PRESS.

180,416,786. Patented ec. 10, 1889.

(No Model.)

. 2 Sheets-Sheet 2. B. HUBER. CYLINDER PRINTING PRESS.

Patented Dec. .10, 1.889.

N. PETERS. Pholvlillwgmphor. Wlhillim D C 'smaller driving-gear.

l UNITED" STATES PATENT OFFICE.

v BERTHOLD HUBER, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE HUBER PRINTING PRESS COMPANY, OF SAME PLACE.

CYLINDER PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 416,786, dated December 10, 1889.

'i Application led August 31, 1889. Serial No. 322,541. (No model.)

To @ZZ whom t may concern,.-

Be it known that LBERTHOLD HUBER, of Taunton, county of Bristol, State of Massachusetts, have invented an Improvement in ACylinder Printing-Presses, of which the following description, in connection with the accompanying drawings, is'fa specification, like letters on the drawingsrrepresenting like parts. p

This invention is an improvement on that described in United States Patent No. 370,789, dated October 4, 1887. Inthe said patent the impression-cylinders, which rise and fall at intervals, are so geared'together that the second impression-cylinder derives its rotation from a toothed gear on the first impressioncylinder, which engages a like gear on the second impression-cylinder, the gear on the first impression-cylinder being driven by a In the said machine, as the first impression-cylinder rises and falls, its teeth are made to enter more or less into engagement with the teeth of the drivinggear. This variation in the engagement of the teeth of these gears, due to the rising and falling of the impression-cylinders, causes a certain amount of backlash, which interferes with the accuracy of register of the second impression-cylinder. To overcome this difficulty, I have provided the press with gears whereby each cylinder, besides being geared together, is driven positively from the same source of motion, thereby insuring absolutely correct registration of the second impressioncylinder.

My invention consists, essentially, in the combination, with the first and second impression-cylinders and their attached gears in mesh with each other, of a driving-gear to drive one of the said cylinders, and an independent intermediate gear between the said driving-gear and the other of`the said impression-cylinders, whereby the said cylinders are each positively driven at the same speed, the gears carried by the said cylinders being kept -in mesh and aiding in preserving steadiness of movement.

Figure 1 in side elevation represents a sufcient portion of the press shown in the patent referred to with my present improvements added to enable my invention to be understood. Fig. 2 is a section in the line no,

Figs. 3 and 4 are enlarged details of gear D8 in mesh with a gear carried by the first impression-cylinder and engaging a gear D7, fast upon and rotating the reversing-shaft D2, the swivel-box D3, the box D4, adapted to rise Aand fall in the slotted bracket D5, the roller D6 at the inner end of the said reversing-shaft, the rack B4, the reversing-pinion D', the eccentrics I8 I4 atoppositeends of the shafts to which they are connected, the said shafts being extended across the machine and having like eccentrics at each end thereof,

the lifting bars or rods N N2, supporting, respectively, the journals of the first and second impression-cylinders, the feed-board F, and the fly F', are and may be all as common to the patent referred to, wherein like letters are employed to designate like parts. In the accompanying drawings I have omitted the devices for actuating the shafts carrying the said eccentrics, as they will be the same as in lthe patent referred to.

Herein the power-shaft A3 (shown as a short sleeve supported by a suitable stud A4) has a pinion 3, (shown by full lines, but partially in section, Fig. 2, and by dotted lines, Fig. 1,)

which directly engages the gear D8, which in this my present invention I have made as the driving-gear to impart motion to both impression-cylinders. To do this, in Figs. 1, 2, 3, and 4 I have provided the impression-cylinder C' with a toothed gear a and the impression-roll C2 with a toothed gear b, the driving-gear DS directly engaging the toothed gear a and rotating the impression-cylinder f C'. The driving-gear D8 also engages an intermediate gear b', mounted to rotate about a stud b2, carried on the frame by a hub projecting through the lifting-bar N2, the said intermediate gear engagingthe toothed gear IOO b, referred to. In this Way, as the drivinggear Ds is rotated, it positively rotates the impression-Cylinder C and-rotates the intermediate gear b', causing it to positively rotate the impression-cylinder C2.

In operation, when the impression-Cylinder C is in its lowest position, the impressioncylinder C2 Will be elevated, and referring to Fig.3, which is a diagram illustrating the position of the gearing with the cylinders in the position stated, it Will be seen that the gear a is in full mesh with the driving-gear D8, and that the gear b is but partially in mesh With the intermediate gear b. In this condition the drivingegear D8 beeomes the prime driver for both impression-oylinders, the motion being transmitted from the said driving-gear through the gears d C4, the intermediate gear ZJ also aiding in sneh motion.

Referring to Fig- 4, another diagram, it will be supposed that the impression-cylinder C is elevated and the impression-cylinder C2 is down, and in this condition it Will be seen that the gear b is in full mesh with the gear b and that the gear a is in but partial mesh with the driving-gear D, and in this oondition the impression-cylinder C is driven .mainly by the driving-gear Working through the intermediate gear b', the gear b, and the gear C4, it engaging the gear C3 fast on the impression-cylinder C', the said driving-gear D8 aiding, however, in imparting motion to the said iirst impression-cylinder. In this Way it will be seen that the difference in mesh between the several gears, owing to the rise and fall of the impression-cylinder, does not permitof any slip or lost motion or backlash, and as a result the second impressioncylinder always comes in proper register at the proper time.

As a modioationof my invention I may omit the toothed gears d b, which are attached to the toothed gears C3 C4, and cause the driving-gear D8 to directly engage the toothed Wheel C3, the intermediate gear b directly engaging the toothed gear C4. This modifioation is represented by the diagram, Fig. 5.

I Vclaim-- l. The combination, With the first and seeyond impression-cylinders and their attached gears in mesh with each other, of a drivinggear to drive one of the said Cylinders, and an intermediate gear between the said drivinggear and the other cylinder-gear, whereby the said cylinders are eaoh positively driven at the same speed, substantially asdesoribed.

2. The Combination, with the first and second impression-eylinders, eaeh having' a large and small cylinder-gear mounted thereon, the two large gears being in mesh with each other, of a driving-gear to drive one of lthe small oylinder-gears, and an intermediate gear between the said driving-gear and the other small cylinder-gear, whereby the said Cylinders are eaeh positively driven at the same speed, substantially as described.

In testimony whereof I have signed my name to this specification in the presence oft-Wo subseribng Witnesses.

BERTIIOLD- HUBER.

Vitnesses:

WILLIS K; HODGMAN, EDWARD P. COLEMAN. 

